Pipe wrench



F. DIXON PI PE WRENCH Nov. 21, 1933.

Filed April 25 www FATE D MON @WMM www Patented Nov. 21, 1933 UNITED STATES PIPE WRENCH Y Fate Dixon, Durham, N. C., assigner ofthreeeighths to George. M. Gregory, and threeeighths to P. Dbrton, both f Durham, N. C.

Application April 25,1933. Serial No. 668,187 i claims. (01. 81.-91)

My invention relates to wrenches adapted Vfor use on round work, such as pipes, while not necessarily restricted to this use.`

y An important object of the invention is to provide a wrench of the above-mentioned character,

so constructed that its jaws may have the maximum gripping action with the work, and will freel release the same, when desired.

A further object of the invention is to provide a wrench of the above-mentioned character, which may be readily applied to the work in inaccessible positions.

A further object of the invention is to provide a wrench of the above-mentioned character, so

constructed that the pull upon the lever-handle in one direction will serve to powerfully clamp the jaws into engagement with the work.

A further object of the invention is to provide a wrench of the above-mentioned character, having opposed jaws which are relatively adjustable` to and from each other for receiving work of different sizes.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawing, forming a part of this specification, in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of a wrench embodying my invention,

Figure 2 is an edge elevation of the same,

Figure 3 is a longitudinal section taken on line 3--3 of Figure 2.

In the drawing, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 10 designates a forward jaw, having its rear or inner face 11 preferably serrated for engagement with round work, such as a pipe, or the like. Preferably formed integral with the jaw l0 is a shank 12, having threads 13. This shank extends between ears or knuckles 14, and is pivotally connected therewith by means of a bolt, rivet, or the like, as shown at 15. These knuckles are preferably integral with a lever-handle 16, arranged in end-to-end relation with the shank 12, and more or less at a straight angle thereto.

The numeral 17 designates a second shank, arranged at the side of the shank 12, in spaced relation thereto. The shank 17 is generally parallel with the shank 12. At its forward end, the shank 17 is provided with a rear jaw 18, the forward face of which is preferably serrated for engagement with the pipe, or the like, as shown at 18.A The jaw 18 is opposed to the jaw 11 and is .longitudinally shiftable to and from ther same. A guide yoke 19 is secured to the forward, end of the shank 17, and is preferably integral therewith, and this guide yoke slidably receives 69. the shank 12, and there is suflcient play between the yoke and the shank whereby theforward jaw 11 `may be angularly adjusted'y with respect to the rear jaw 18, for effecting a powerful gripping action with the work. The rear endof the 65. shank 17 passes through an opening formed in a yoke 20, preferably formed integral with the forward end of the lever-handle 16. There is sufcient play between the shank17 andv yoke'20 whereby the lever-handle 16 may be turned with- 70 in limits upon its pivot 15, with respect tonthe shank 17. Y

Arranged at the rear of the yoke 19 is an operating nut 2l, having screw-threaded engagement with the threads 13. This operating nut is arranged in advance of a lug 22, carried by the shank 17, and formed integral therewith. The nut 21 operating between the yoke 19 and lug 22, may be turned in either direction to shift the jaw 18 longitudinally toward or from the jaw 80 11, as is obvious.

The operation of the wrench is as follows:

By manipulation of the nut 21, the jaw 18 may be brought suitably close to the jaw T11 for properly receivingV there-between the pipe, or work, and be applied to the same. The leverhandle 16 is now grasped by the operator, and when pressure is applied thereto for swinging the same in the direction of the arrow, the shanks 12 and 17 have their rear ends slightly spread or 90 diverged, thereby causing the jaws 11 and 18 to slightly converge toward their free ends in effecting the maximum gripping action with the work. In eifecting this operation, the top portion 20 of the wall of the yoke 20 engages with 95 the top wall of the shank 17, swinging the rearv end of this shank downwardly, while the pivot pin 15 forces the rear end of the shank 12 upwardly, the two Shanks having relative turning movement by virtue of the sliding pivotal connection that the yoke 19 affords between the same. When'the lever-handle 16 is swung in a reverse direction, the rear ends of the Shanks 12 and 17 are moved toward each other, and the jaws l0 and 18 are thereby moved to the normal parallel po- 105 sition, or to a position wherein they diverge slightlytoward their free ends, and will readily free the work.

It is to be understood that the form of my invention herewith shown and described, is to be taken as the preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention, or the scope of the subjoined claims.

Having fully described my invention, what I claim is:

1. A wrench comprising a shank, a stationary jaw carried by the shank, a movable jaw disposed in opposition to the stationary jaw andl having a yoke rigidly secured thereto and mounted upon the shank to move longitudinally thereof and angularly adjustable with relation thereto, a Sec:-v ond shank carrying the movable jaw and extending longitudinally of the firstv shank, an operating nut having screw-threaded engagement with the first shank and arranged to feed the movable jaw toward the stationary jaw, a lever-v handle pivotally connected with the rst shank at the rear of the movable jaw, and a yoke rigidly carried by the lever-handle and slidably receiving the second shank therein, the arrangement being such that the last-named yoke will cause the second shank to diverge rearwardly when the leverhandle is swung on its pivot with relation to the first shank.

2.. A wrench comprising a shank, a stationary jaw carried byY the shank, a movable. jaw carried by the shank and shiftable to and from the stationary jaw and also adapted to be angularly adjusted with relation thereto, an op erating nut having screw-threaded engagement with the shank andserving to shift thefmovable jaw toward and from the stationary jaw, a second shank rigidly secured to the movable jaw and extending longitudinally of the first shank, and

a lever-handle pivotally connected with the rear sa, t

end portion of the first shank and having a part rigidly secured thereto and arranged to engage the second shank to shift the same laterally.

3. A wrench comprising a shank, a stationary jaw carried by the forward end of the shank, a movable jaw disposed rearwardly of the stationary jaw and having a yoke rigidly secured thereto and carried by the shank and adapted to be shifted to and from the stationary jaw and be angularly adjustable with relation thereto, an operating nut disposed rearwardly of the yoke of the movable jaw and having screw-threaded lengagement with the shank and serving to shift the movable jaw toward the stationary jaw, a second shank rigidly-secured to the movable jaw andY extending longitudinally of the rst-named shank, va lever-handle disposed in end-to-end relation with the, first shank and pivotally conneeted with the rear end of the same, and a part carried by the lever-handle near its pivot for engaging with the. rear endl portion of thesecond shank'to shift theS-me laterally.A e f 4'. A wrench coi'cfip'ri singav shank, a stationary jaw secured thereto, a yoke. loosely mounted upon the' shank, a movablejaw rigidly'r carried by the yoke', .a second shank rigidly secured to the, mov-l ablefjaw, and extending longitudinally of the irst shank in spacedl relatiQnthereto, a lug carried by the second shank and: spacedl from the yoke, an operating nut having screw-threaded` engagement with thel'rst shank and arranged between the yoke and lug, a lever-handle pivotally connected with the rear end of the rst shank, and a yoke loosely receiving the rear end of the seoond shank and carried by the liever-handle.

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